Add preliminary arguments handling

src/Main.hs

@@ -1,10 +1,14 @@
+{-# LANGUAGE RecordWildCards #-}
+
 import Types
 import Pretty
 import Parser
 
+import Control.Monad   (when)
 import Data.List       (isInfixOf)
 import System.FilePath (takeBaseName)
 import System.Process  (readProcess, callCommand)
+import System.Console.ArgParser
 
 
 -- Search functions --
@@ -51,10 +55,40 @@ sendClipboard text =
   callCommand $ "echo " ++ (show text) ++ " | pbcopy"
 
 
+-- CLI arguments --
+
+data ProgArgs = ProgArgs
+  { searchTerm   :: String
+  , keychain     :: FilePath
+  , exactMatches :: String
+  , resultsLimit :: Int
+  , contentOnly  :: Bool
+  , noClipboard  :: Bool
+  } deriving (Show)
+
+parser :: ParserSpec ProgArgs
+parser = ProgArgs
+  `parsedBy` reqPos      "term"      `Descr` "Keychain search term"
+  `andBy`    optFlag  "" "keychain"  `Descr` "Use a specific keychain"
+  `andBy`    optFlag  "" "exact"     `Descr` "Only return exact matches"
+  `andBy`    optFlag  10 "limit"     `Descr` "Set upper results limit"
+  `andBy`    boolFlag    "content"   `Descr` "Print only the items content"
+  `andBy`    boolFlag    "clipboard" `Descr` "Disable clipboard paste"
+
+interface :: IO (CmdLnInterface ProgArgs)
+interface =
+  (`setAppDescr` "Quickly access the OSX keychain") <$>
+  (`setAppEpilog` "TODO") <$>
+  mkApp parser
+
 main :: IO ()
-main = do
+main = interface >>= (`runApp` search)
+
+
+search :: ProgArgs -> IO ()
+search ProgArgs {..} = do
   res <- fuzzy "gog.com" <$> getKeychain
-  sendClipboard (content (head res))
   pprint res
+  when (not noClipboard) (sendClipboard (content $ head res))